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Recherches sur le spectre trophique compare de Littorina saxatilis (Olivi) et de L. nigrolineata (Gray) (Gastropoda, Prosobranchia) sur la grève de Roscoff. 2. Cas de populations vivant an milieu d'algues macroscopiques = Research on the compared spectra of Littorina saxatilis and L. nigrolineata living on intertidal shores of Roscoff. 2. Populations among macroscopic algae
Sacchi, C.F.; Occhipinti-Ambrogi, A.; Voltolina, D. (1981). Recherches sur le spectre trophique compare de Littorina saxatilis (Olivi) et de L. nigrolineata (Gray) (Gastropoda, Prosobranchia) sur la grève de Roscoff. 2. Cas de populations vivant an milieu d'algues macroscopiques = Research on the compared spectra of Littorina saxatilis and L. nigrolineata living on intertidal shores of Roscoff. 2. Populations among macroscopic algae. Cah. Biol. Mar. 22(1): 83-88
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Sacchi, C.F.
  • Occhipinti-Ambrogi, A.
  • Voltolina, D.

Abstract
    The trophic spectra of the species was studied by analysis of gut contents and radulas. The two periwinkles eat large amounts of Fucaceae, and small amounts of microscopic algae, probably introduced as epiphytes of Fucus vesiculosus and Ascophyllum nodosum. This is also true for L. littorea living in the same ecological conditions and L. saxatilis inhabiting a shore mainly covered with Enteromorpha compessa. L. saxatilis and L. nigrolineata seem to owe their frequently 'microphagous' habit less to a deliberate choice of microscopic algae than to necessity.

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